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Do try/catch blocks hurt performance when exceptions are not thrown?
...c public void Main(string[] args)
{
Stopwatch w = new Stopwatch();
double d = 0;
w.Start();
for (int i = 0; i < 10000000; i++)
{
try
{
d = Math.Sin(1);
}
catch (Exception ex)
{
Console.WriteLine(ex.ToString());
...
PG undefinedtable error relation users does not exist
... more about dumping the schema see
Schema Dumping and You section. Rails Docs
If the trick doesn't help, drop the database, then re-create it again, migrate data, and if you have seeds, sow the database:
rake db:drop db:create db:migrate db:seed
or in short way (since 3.2):
rake db:migrate:r...
Remove first element from $@ in bash [duplicate]
...
Another variation uses array slicing:
for item in "${@:2}"
do
process "$item"
done
This might be useful if, for some reason, you wanted to leave the arguments in place since shift is destructive.
share
...
Building a notification system [closed]
...
This may be a dumb question but with this set up what do you do once the user has seen or acted on the notification? Do you just remove it from the database or just use dates to see if the user has logged in since the notification was created?
– Jeffery Mil...
Why does the use of 'new' cause memory leaks?
...ith new, so you can never delete it even if you wanted!
What you should do
You should prefer automatic storage duration. Need a new object, just write:
A a; // a new object of type A
B b; // a new object of type B
If you do need dynamic storage duration, store the pointer to the allocated obj...
Deep cloning objects
I want to do something like:
49 Answers
49
...
jQuery Tips and Tricks
...
Also, if it's any help, you can actually do $("<div/>") and achieve the same thing as $("<div></div>")
– Hugoware
Dec 23 '08 at 19:27
...
Guid is all 0's (zeros)?
... that send objects with Guids back and forth. In my web app test code, I'm doing the following:
6 Answers
...
What are attributes in .NET?
What are attributes in .NET, what are they good for, and how do I create my own attributes?
11 Answers
...
With Git, how do I turn off the “LF will be replaced by CRLF” warning
...prevent git from replacing lf by crlf? @chronial
– aidonsnous
Sep 29 '16 at 11:05
3
@aidonsnous F...